Commit | Line | Data |
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9f8f2064 JA |
1 | #include <stdio.h> |
2 | #include <string.h> | |
3 | #include <sys/time.h> | |
4 | #include <sys/types.h> | |
5 | #include <sys/stat.h> | |
6 | #include <dirent.h> | |
7 | #include <libgen.h> | |
8 | #include <math.h> | |
9edf7b3e | 9 | #include <assert.h> |
9f8f2064 JA |
10 | |
11 | #include "fio.h" | |
c97bd0fa | 12 | #include "smalloc.h" |
7c9b1bce | 13 | #include "diskutil.h" |
a39fb9ea | 14 | #include "helper_thread.h" |
9f8f2064 JA |
15 | |
16 | static int last_majdev, last_mindev; | |
c97bd0fa | 17 | static struct disk_util *last_du; |
9f8f2064 | 18 | |
9ec7779f | 19 | static struct fio_mutex *disk_util_mutex; |
9ec7779f | 20 | |
2db4ecca JA |
21 | static struct disk_util *__init_per_file_disk_util(struct thread_data *td, |
22 | int majdev, int mindev, char *path); | |
23 | ||
c97bd0fa JA |
24 | static void disk_util_free(struct disk_util *du) |
25 | { | |
26 | if (du == last_du) | |
27 | last_du = NULL; | |
28 | ||
b8d541d5 JA |
29 | while (!flist_empty(&du->slaves)) { |
30 | struct disk_util *slave; | |
31 | ||
9342d5f8 | 32 | slave = flist_first_entry(&du->slaves, struct disk_util, slavelist); |
b8d541d5 JA |
33 | flist_del(&slave->slavelist); |
34 | slave->users--; | |
35 | } | |
93bcfd20 | 36 | |
c97bd0fa | 37 | fio_mutex_remove(du->lock); |
2a20eebc | 38 | free(du->sysfs_root); |
c97bd0fa JA |
39 | sfree(du); |
40 | } | |
41 | ||
9f8f2064 JA |
42 | static int get_io_ticks(struct disk_util *du, struct disk_util_stat *dus) |
43 | { | |
44 | unsigned in_flight; | |
d09a64a0 | 45 | unsigned long long sectors[2]; |
9f8f2064 JA |
46 | char line[256]; |
47 | FILE *f; | |
48 | char *p; | |
5ec10eaa | 49 | int ret; |
9f8f2064 | 50 | |
cd991b9e JA |
51 | dprint(FD_DISKUTIL, "open stat file: %s\n", du->path); |
52 | ||
9f8f2064 JA |
53 | f = fopen(du->path, "r"); |
54 | if (!f) | |
55 | return 1; | |
56 | ||
57 | p = fgets(line, sizeof(line), f); | |
58 | if (!p) { | |
59 | fclose(f); | |
60 | return 1; | |
61 | } | |
62 | ||
cd991b9e JA |
63 | dprint(FD_DISKUTIL, "%s: %s", du->path, p); |
64 | ||
504bc961 JA |
65 | ret = sscanf(p, "%llu %llu %llu %llu %llu %llu %llu %llu %u %llu %llu\n", |
66 | (unsigned long long *) &dus->s.ios[0], | |
67 | (unsigned long long *) &dus->s.merges[0], | |
68 | §ors[0], | |
69 | (unsigned long long *) &dus->s.ticks[0], | |
70 | (unsigned long long *) &dus->s.ios[1], | |
71 | (unsigned long long *) &dus->s.merges[1], | |
72 | §ors[1], | |
73 | (unsigned long long *) &dus->s.ticks[1], | |
74 | &in_flight, | |
75 | (unsigned long long *) &dus->s.io_ticks, | |
76 | (unsigned long long *) &dus->s.time_in_queue); | |
9f8f2064 | 77 | fclose(f); |
cd991b9e | 78 | dprint(FD_DISKUTIL, "%s: stat read ok? %d\n", du->path, ret == 1); |
a3b4cf7d JA |
79 | dus->s.sectors[0] = sectors[0]; |
80 | dus->s.sectors[1] = sectors[1]; | |
cd991b9e | 81 | return ret != 11; |
9f8f2064 JA |
82 | } |
83 | ||
84 | static void update_io_tick_disk(struct disk_util *du) | |
85 | { | |
86 | struct disk_util_stat __dus, *dus, *ldus; | |
87 | struct timeval t; | |
88 | ||
c97bd0fa JA |
89 | if (!du->users) |
90 | return; | |
90b97ac3 JA |
91 | if (get_io_ticks(du, &__dus)) |
92 | return; | |
9f8f2064 JA |
93 | |
94 | dus = &du->dus; | |
95 | ldus = &du->last_dus; | |
96 | ||
a3b4cf7d JA |
97 | dus->s.sectors[0] += (__dus.s.sectors[0] - ldus->s.sectors[0]); |
98 | dus->s.sectors[1] += (__dus.s.sectors[1] - ldus->s.sectors[1]); | |
99 | dus->s.ios[0] += (__dus.s.ios[0] - ldus->s.ios[0]); | |
100 | dus->s.ios[1] += (__dus.s.ios[1] - ldus->s.ios[1]); | |
101 | dus->s.merges[0] += (__dus.s.merges[0] - ldus->s.merges[0]); | |
102 | dus->s.merges[1] += (__dus.s.merges[1] - ldus->s.merges[1]); | |
103 | dus->s.ticks[0] += (__dus.s.ticks[0] - ldus->s.ticks[0]); | |
104 | dus->s.ticks[1] += (__dus.s.ticks[1] - ldus->s.ticks[1]); | |
105 | dus->s.io_ticks += (__dus.s.io_ticks - ldus->s.io_ticks); | |
106 | dus->s.time_in_queue += (__dus.s.time_in_queue - ldus->s.time_in_queue); | |
9f8f2064 JA |
107 | |
108 | fio_gettime(&t, NULL); | |
a3b4cf7d | 109 | dus->s.msec += mtime_since(&du->time, &t); |
9f8f2064 | 110 | memcpy(&du->time, &t, sizeof(t)); |
a3b4cf7d | 111 | memcpy(&ldus->s, &__dus.s, sizeof(__dus.s)); |
9f8f2064 JA |
112 | } |
113 | ||
9ec7779f | 114 | int update_io_ticks(void) |
9f8f2064 | 115 | { |
01743ee1 | 116 | struct flist_head *entry; |
9f8f2064 | 117 | struct disk_util *du; |
9ec7779f | 118 | int ret = 0; |
9f8f2064 | 119 | |
cd991b9e JA |
120 | dprint(FD_DISKUTIL, "update io ticks\n"); |
121 | ||
9ec7779f JA |
122 | fio_mutex_down(disk_util_mutex); |
123 | ||
a47591e4 | 124 | if (!helper_should_exit()) { |
9ec7779f JA |
125 | flist_for_each(entry, &disk_list) { |
126 | du = flist_entry(entry, struct disk_util, list); | |
127 | update_io_tick_disk(du); | |
128 | } | |
129 | } else | |
130 | ret = 1; | |
131 | ||
132 | fio_mutex_up(disk_util_mutex); | |
133 | return ret; | |
9f8f2064 JA |
134 | } |
135 | ||
e11c410c | 136 | static struct disk_util *disk_util_exists(int major, int minor) |
9f8f2064 | 137 | { |
01743ee1 | 138 | struct flist_head *entry; |
9f8f2064 JA |
139 | struct disk_util *du; |
140 | ||
9ec7779f JA |
141 | fio_mutex_down(disk_util_mutex); |
142 | ||
01743ee1 JA |
143 | flist_for_each(entry, &disk_list) { |
144 | du = flist_entry(entry, struct disk_util, list); | |
9f8f2064 | 145 | |
9ec7779f JA |
146 | if (major == du->major && minor == du->minor) { |
147 | fio_mutex_up(disk_util_mutex); | |
e11c410c | 148 | return du; |
9ec7779f | 149 | } |
9f8f2064 JA |
150 | } |
151 | ||
9ec7779f | 152 | fio_mutex_up(disk_util_mutex); |
e11c410c | 153 | return NULL; |
9f8f2064 JA |
154 | } |
155 | ||
67423013 ST |
156 | static int get_device_numbers(char *file_name, int *maj, int *min) |
157 | { | |
158 | struct stat st; | |
159 | int majdev, mindev; | |
160 | char tempname[PATH_MAX], *p; | |
161 | ||
162 | if (!lstat(file_name, &st)) { | |
163 | if (S_ISBLK(st.st_mode)) { | |
164 | majdev = major(st.st_rdev); | |
165 | mindev = minor(st.st_rdev); | |
166 | } else if (S_ISCHR(st.st_mode)) { | |
167 | majdev = major(st.st_rdev); | |
168 | mindev = minor(st.st_rdev); | |
169 | if (fio_lookup_raw(st.st_rdev, &majdev, &mindev)) | |
170 | return -1; | |
171 | } else if (S_ISFIFO(st.st_mode)) | |
172 | return -1; | |
173 | else { | |
174 | majdev = major(st.st_dev); | |
175 | mindev = minor(st.st_dev); | |
176 | } | |
177 | } else { | |
178 | /* | |
179 | * must be a file, open "." in that path | |
180 | */ | |
087d0ed0 | 181 | tempname[PATH_MAX - 1] = '\0'; |
67423013 ST |
182 | strncpy(tempname, file_name, PATH_MAX - 1); |
183 | p = dirname(tempname); | |
184 | if (stat(p, &st)) { | |
185 | perror("disk util stat"); | |
186 | return -1; | |
187 | } | |
188 | ||
189 | majdev = major(st.st_dev); | |
190 | mindev = minor(st.st_dev); | |
191 | } | |
192 | ||
193 | *min = mindev; | |
194 | *maj = majdev; | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
199 | static int read_block_dev_entry(char *path, int *maj, int *min) | |
200 | { | |
201 | char line[256], *p; | |
202 | FILE *f; | |
203 | ||
204 | f = fopen(path, "r"); | |
205 | if (!f) { | |
206 | perror("open path"); | |
207 | return 1; | |
208 | } | |
209 | ||
210 | p = fgets(line, sizeof(line), f); | |
211 | fclose(f); | |
212 | ||
213 | if (!p) | |
214 | return 1; | |
215 | ||
216 | if (sscanf(p, "%u:%u", maj, min) != 2) | |
217 | return 1; | |
218 | ||
219 | return 0; | |
220 | } | |
221 | ||
67423013 | 222 | static void find_add_disk_slaves(struct thread_data *td, char *path, |
2db4ecca | 223 | struct disk_util *masterdu) |
67423013 ST |
224 | { |
225 | DIR *dirhandle = NULL; | |
226 | struct dirent *dirent = NULL; | |
227 | char slavesdir[PATH_MAX], temppath[PATH_MAX], slavepath[PATH_MAX]; | |
228 | struct disk_util *slavedu = NULL; | |
229 | int majdev, mindev; | |
230 | ssize_t linklen; | |
231 | ||
2db4ecca | 232 | sprintf(slavesdir, "%s/%s", path, "slaves"); |
67423013 ST |
233 | dirhandle = opendir(slavesdir); |
234 | if (!dirhandle) | |
235 | return; | |
236 | ||
237 | while ((dirent = readdir(dirhandle)) != NULL) { | |
2db4ecca JA |
238 | if (!strcmp(dirent->d_name, ".") || |
239 | !strcmp(dirent->d_name, "..")) | |
67423013 ST |
240 | continue; |
241 | ||
22497370 | 242 | sprintf(temppath, "%s/%s", slavesdir, dirent->d_name); |
67423013 ST |
243 | /* Can we always assume that the slaves device entries |
244 | * are links to the real directories for the slave | |
245 | * devices? | |
246 | */ | |
976406b8 | 247 | linklen = readlink(temppath, slavepath, PATH_MAX - 1); |
2db4ecca | 248 | if (linklen < 0) { |
67423013 | 249 | perror("readlink() for slave device."); |
f0cc675f | 250 | closedir(dirhandle); |
67423013 ST |
251 | return; |
252 | } | |
2db4ecca | 253 | slavepath[linklen] = '\0'; |
67423013 ST |
254 | |
255 | sprintf(temppath, "%s/%s/dev", slavesdir, slavepath); | |
256 | if (read_block_dev_entry(temppath, &majdev, &mindev)) { | |
257 | perror("Error getting slave device numbers."); | |
f0cc675f | 258 | closedir(dirhandle); |
67423013 ST |
259 | return; |
260 | } | |
261 | ||
b06de82e AB |
262 | /* |
263 | * See if this maj,min already exists | |
264 | */ | |
265 | slavedu = disk_util_exists(majdev, mindev); | |
266 | if (slavedu) | |
267 | continue; | |
268 | ||
22497370 | 269 | sprintf(temppath, "%s/%s", slavesdir, slavepath); |
67423013 ST |
270 | __init_per_file_disk_util(td, majdev, mindev, temppath); |
271 | slavedu = disk_util_exists(majdev, mindev); | |
272 | ||
273 | /* Should probably use an assert here. slavedu should | |
274 | * always be present at this point. */ | |
b8d541d5 JA |
275 | if (slavedu) { |
276 | slavedu->users++; | |
67423013 | 277 | flist_add_tail(&slavedu->slavelist, &masterdu->slaves); |
b8d541d5 | 278 | } |
67423013 ST |
279 | } |
280 | ||
281 | closedir(dirhandle); | |
67423013 ST |
282 | } |
283 | ||
b8fefc2b | 284 | static struct disk_util *disk_util_add(struct thread_data *td, int majdev, |
c97bd0fa | 285 | int mindev, char *path) |
9f8f2064 JA |
286 | { |
287 | struct disk_util *du, *__du; | |
01743ee1 | 288 | struct flist_head *entry; |
4b919f77 | 289 | int l; |
9f8f2064 | 290 | |
cd991b9e JA |
291 | dprint(FD_DISKUTIL, "add maj/min %d/%d: %s\n", majdev, mindev, path); |
292 | ||
c97bd0fa | 293 | du = smalloc(sizeof(*du)); |
81b3c86f | 294 | if (!du) |
fba5c5ff | 295 | return NULL; |
fba5c5ff | 296 | |
9f8f2064 | 297 | memset(du, 0, sizeof(*du)); |
01743ee1 | 298 | INIT_FLIST_HEAD(&du->list); |
4b919f77 KR |
299 | l = snprintf(du->path, sizeof(du->path), "%s/stat", path); |
300 | if (l < 0 || l >= sizeof(du->path)) { | |
301 | log_err("constructed path \"%.100s[...]/stat\" larger than buffer (%zu bytes)\n", | |
302 | path, sizeof(du->path) - 1); | |
303 | sfree(du); | |
304 | return NULL; | |
305 | } | |
a2ba41ed | 306 | strncpy((char *) du->dus.name, basename(path), FIO_DU_NAME_SZ - 1); |
2a20eebc | 307 | du->sysfs_root = strdup(path); |
9f8f2064 JA |
308 | du->major = majdev; |
309 | du->minor = mindev; | |
67423013 ST |
310 | INIT_FLIST_HEAD(&du->slavelist); |
311 | INIT_FLIST_HEAD(&du->slaves); | |
521da527 | 312 | du->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED); |
c97bd0fa | 313 | du->users = 0; |
9f8f2064 | 314 | |
9ec7779f JA |
315 | fio_mutex_down(disk_util_mutex); |
316 | ||
01743ee1 JA |
317 | flist_for_each(entry, &disk_list) { |
318 | __du = flist_entry(entry, struct disk_util, list); | |
9f8f2064 | 319 | |
d09a64a0 | 320 | dprint(FD_DISKUTIL, "found %s in list\n", __du->dus.name); |
cd991b9e | 321 | |
d09a64a0 | 322 | if (!strcmp((char *) du->dus.name, (char *) __du->dus.name)) { |
c97bd0fa | 323 | disk_util_free(du); |
9ec7779f | 324 | fio_mutex_up(disk_util_mutex); |
c97bd0fa | 325 | return __du; |
9f8f2064 JA |
326 | } |
327 | } | |
328 | ||
d09a64a0 | 329 | dprint(FD_DISKUTIL, "add %s to list\n", du->dus.name); |
cd991b9e | 330 | |
9f8f2064 JA |
331 | fio_gettime(&du->time, NULL); |
332 | get_io_ticks(du, &du->last_dus); | |
333 | ||
01743ee1 | 334 | flist_add_tail(&du->list, &disk_list); |
9ec7779f JA |
335 | fio_mutex_up(disk_util_mutex); |
336 | ||
67423013 | 337 | find_add_disk_slaves(td, path, du); |
c97bd0fa | 338 | return du; |
9f8f2064 JA |
339 | } |
340 | ||
341 | static int check_dev_match(int majdev, int mindev, char *path) | |
342 | { | |
343 | int major, minor; | |
9f8f2064 | 344 | |
67423013 | 345 | if (read_block_dev_entry(path, &major, &minor)) |
9f8f2064 | 346 | return 1; |
9f8f2064 | 347 | |
c97bd0fa | 348 | if (majdev == major && mindev == minor) |
9f8f2064 | 349 | return 0; |
9f8f2064 | 350 | |
9f8f2064 JA |
351 | return 1; |
352 | } | |
353 | ||
ac0be2ac | 354 | static int find_block_dir(int majdev, int mindev, char *path, int link_ok) |
9f8f2064 JA |
355 | { |
356 | struct dirent *dir; | |
357 | struct stat st; | |
358 | int found = 0; | |
359 | DIR *D; | |
360 | ||
361 | D = opendir(path); | |
362 | if (!D) | |
363 | return 0; | |
364 | ||
365 | while ((dir = readdir(D)) != NULL) { | |
366 | char full_path[256]; | |
367 | ||
368 | if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) | |
369 | continue; | |
370 | ||
22497370 | 371 | sprintf(full_path, "%s/%s", path, dir->d_name); |
9f8f2064 JA |
372 | |
373 | if (!strcmp(dir->d_name, "dev")) { | |
374 | if (!check_dev_match(majdev, mindev, full_path)) { | |
375 | found = 1; | |
376 | break; | |
377 | } | |
378 | } | |
379 | ||
ac0be2ac JA |
380 | if (link_ok) { |
381 | if (stat(full_path, &st) == -1) { | |
382 | perror("stat"); | |
383 | break; | |
384 | } | |
385 | } else { | |
386 | if (lstat(full_path, &st) == -1) { | |
387 | perror("stat"); | |
388 | break; | |
389 | } | |
9f8f2064 JA |
390 | } |
391 | ||
392 | if (!S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode)) | |
393 | continue; | |
394 | ||
ac0be2ac | 395 | found = find_block_dir(majdev, mindev, full_path, 0); |
9f8f2064 JA |
396 | if (found) { |
397 | strcpy(path, full_path); | |
398 | break; | |
399 | } | |
400 | } | |
401 | ||
402 | closedir(D); | |
403 | return found; | |
404 | } | |
405 | ||
c97bd0fa JA |
406 | static struct disk_util *__init_per_file_disk_util(struct thread_data *td, |
407 | int majdev, int mindev, | |
408 | char *path) | |
9f8f2064 JA |
409 | { |
410 | struct stat st; | |
67423013 | 411 | char tmp[PATH_MAX]; |
9f8f2064 JA |
412 | char *p; |
413 | ||
67423013 ST |
414 | /* |
415 | * If there's a ../queue/ directory there, we are inside a partition. | |
416 | * Check if that is the case and jump back. For loop/md/dm etc we | |
417 | * are already in the right spot. | |
418 | */ | |
419 | sprintf(tmp, "%s/../queue", path); | |
420 | if (!stat(tmp, &st)) { | |
421 | p = dirname(path); | |
422 | sprintf(tmp, "%s/queue", p); | |
423 | if (stat(tmp, &st)) { | |
424 | log_err("unknown sysfs layout\n"); | |
c97bd0fa | 425 | return NULL; |
9f8f2064 | 426 | } |
087d0ed0 | 427 | tmp[PATH_MAX - 1] = '\0'; |
67423013 ST |
428 | strncpy(tmp, p, PATH_MAX - 1); |
429 | sprintf(path, "%s", tmp); | |
9f8f2064 JA |
430 | } |
431 | ||
c97bd0fa | 432 | return disk_util_add(td, majdev, mindev, path); |
67423013 ST |
433 | } |
434 | ||
c97bd0fa JA |
435 | static struct disk_util *init_per_file_disk_util(struct thread_data *td, |
436 | char *filename) | |
67423013 ST |
437 | { |
438 | ||
439 | char foo[PATH_MAX]; | |
440 | struct disk_util *du; | |
441 | int mindev, majdev; | |
442 | ||
c97bd0fa JA |
443 | if (get_device_numbers(filename, &majdev, &mindev)) |
444 | return NULL; | |
67423013 ST |
445 | |
446 | dprint(FD_DISKUTIL, "%s belongs to maj/min %d/%d\n", filename, majdev, | |
447 | mindev); | |
cd991b9e | 448 | |
e11c410c | 449 | du = disk_util_exists(majdev, mindev); |
bd4d9bdc | 450 | if (du) |
c97bd0fa | 451 | return du; |
9f8f2064 JA |
452 | |
453 | /* | |
454 | * for an fs without a device, we will repeatedly stat through | |
455 | * sysfs which can take oodles of time for thousands of files. so | |
456 | * cache the last lookup and compare with that before going through | |
457 | * everything again. | |
458 | */ | |
459 | if (mindev == last_mindev && majdev == last_majdev) | |
c97bd0fa | 460 | return last_du; |
9f8f2064 JA |
461 | |
462 | last_mindev = mindev; | |
463 | last_majdev = majdev; | |
5ec10eaa | 464 | |
9f8f2064 | 465 | sprintf(foo, "/sys/block"); |
ac0be2ac | 466 | if (!find_block_dir(majdev, mindev, foo, 1)) |
c97bd0fa | 467 | return NULL; |
9f8f2064 | 468 | |
c97bd0fa | 469 | return __init_per_file_disk_util(td, majdev, mindev, foo); |
67423013 | 470 | } |
9f8f2064 | 471 | |
c97bd0fa JA |
472 | static struct disk_util *__init_disk_util(struct thread_data *td, |
473 | struct fio_file *f) | |
67423013 ST |
474 | { |
475 | return init_per_file_disk_util(td, f->file_name); | |
9f8f2064 JA |
476 | } |
477 | ||
478 | void init_disk_util(struct thread_data *td) | |
479 | { | |
480 | struct fio_file *f; | |
481 | unsigned int i; | |
482 | ||
483 | if (!td->o.do_disk_util || | |
9b87f09b | 484 | td_ioengine_flagged(td, FIO_DISKLESSIO | FIO_NODISKUTIL)) |
9f8f2064 JA |
485 | return; |
486 | ||
487 | for_each_file(td, f, i) | |
c97bd0fa | 488 | f->du = __init_disk_util(td, f); |
9f8f2064 JA |
489 | } |
490 | ||
a666cab8 JA |
491 | static void show_agg_stats(struct disk_util_agg *agg, int terse, |
492 | struct buf_output *out) | |
d09a64a0 JA |
493 | { |
494 | if (!agg->slavecount) | |
495 | return; | |
496 | ||
f2f788dd | 497 | if (!terse) { |
a666cab8 | 498 | log_buf(out, ", aggrios=%llu/%llu, aggrmerge=%llu/%llu, " |
504bc961 JA |
499 | "aggrticks=%llu/%llu, aggrin_queue=%llu, " |
500 | "aggrutil=%3.2f%%", | |
501 | (unsigned long long) agg->ios[0] / agg->slavecount, | |
502 | (unsigned long long) agg->ios[1] / agg->slavecount, | |
503 | (unsigned long long) agg->merges[0] / agg->slavecount, | |
504 | (unsigned long long) agg->merges[1] / agg->slavecount, | |
505 | (unsigned long long) agg->ticks[0] / agg->slavecount, | |
506 | (unsigned long long) agg->ticks[1] / agg->slavecount, | |
507 | (unsigned long long) agg->time_in_queue / agg->slavecount, | |
508 | agg->max_util.u.f); | |
f2f788dd | 509 | } else { |
a666cab8 | 510 | log_buf(out, ";slaves;%llu;%llu;%llu;%llu;%llu;%llu;%llu;%3.2f%%", |
504bc961 JA |
511 | (unsigned long long) agg->ios[0] / agg->slavecount, |
512 | (unsigned long long) agg->ios[1] / agg->slavecount, | |
513 | (unsigned long long) agg->merges[0] / agg->slavecount, | |
514 | (unsigned long long) agg->merges[1] / agg->slavecount, | |
515 | (unsigned long long) agg->ticks[0] / agg->slavecount, | |
516 | (unsigned long long) agg->ticks[1] / agg->slavecount, | |
517 | (unsigned long long) agg->time_in_queue / agg->slavecount, | |
518 | agg->max_util.u.f); | |
f2f788dd | 519 | } |
d09a64a0 JA |
520 | } |
521 | ||
043b74b9 ST |
522 | static void aggregate_slaves_stats(struct disk_util *masterdu) |
523 | { | |
d09a64a0 | 524 | struct disk_util_agg *agg = &masterdu->agg; |
043b74b9 ST |
525 | struct disk_util_stat *dus; |
526 | struct flist_head *entry; | |
527 | struct disk_util *slavedu; | |
d09a64a0 | 528 | double util; |
043b74b9 ST |
529 | |
530 | flist_for_each(entry, &masterdu->slaves) { | |
531 | slavedu = flist_entry(entry, struct disk_util, slavelist); | |
532 | dus = &slavedu->dus; | |
a3b4cf7d JA |
533 | agg->ios[0] += dus->s.ios[0]; |
534 | agg->ios[1] += dus->s.ios[1]; | |
535 | agg->merges[0] += dus->s.merges[0]; | |
536 | agg->merges[1] += dus->s.merges[1]; | |
537 | agg->sectors[0] += dus->s.sectors[0]; | |
538 | agg->sectors[1] += dus->s.sectors[1]; | |
539 | agg->ticks[0] += dus->s.ticks[0]; | |
540 | agg->ticks[1] += dus->s.ticks[1]; | |
541 | agg->time_in_queue += dus->s.time_in_queue; | |
d09a64a0 JA |
542 | agg->slavecount++; |
543 | ||
a3b4cf7d | 544 | util = (double) (100 * dus->s.io_ticks / (double) slavedu->dus.s.msec); |
043b74b9 ST |
545 | /* System utilization is the utilization of the |
546 | * component with the highest utilization. | |
547 | */ | |
d09a64a0 JA |
548 | if (util > agg->max_util.u.f) |
549 | agg->max_util.u.f = util; | |
043b74b9 ST |
550 | |
551 | } | |
552 | ||
d09a64a0 JA |
553 | if (agg->max_util.u.f > 100.0) |
554 | agg->max_util.u.f = 100.0; | |
555 | } | |
556 | ||
27357187 | 557 | void disk_util_prune_entries(void) |
d09a64a0 | 558 | { |
9ec7779f JA |
559 | fio_mutex_down(disk_util_mutex); |
560 | ||
d09a64a0 | 561 | while (!flist_empty(&disk_list)) { |
27357187 JA |
562 | struct disk_util *du; |
563 | ||
9342d5f8 | 564 | du = flist_first_entry(&disk_list, struct disk_util, list); |
d09a64a0 JA |
565 | flist_del(&du->list); |
566 | disk_util_free(du); | |
567 | } | |
043b74b9 | 568 | |
d09a64a0 | 569 | last_majdev = last_mindev = -1; |
9ec7779f JA |
570 | fio_mutex_up(disk_util_mutex); |
571 | fio_mutex_remove(disk_util_mutex); | |
d09a64a0 JA |
572 | } |
573 | ||
f2f788dd | 574 | void print_disk_util(struct disk_util_stat *dus, struct disk_util_agg *agg, |
a666cab8 | 575 | int terse, struct buf_output *out) |
d09a64a0 | 576 | { |
6914f59e | 577 | double util = 0; |
d09a64a0 | 578 | |
a3b4cf7d JA |
579 | if (dus->s.msec) |
580 | util = (double) 100 * dus->s.io_ticks / (double) dus->s.msec; | |
d09a64a0 JA |
581 | if (util > 100.0) |
582 | util = 100.0; | |
583 | ||
f2f788dd | 584 | if (!terse) { |
f1d64553 | 585 | if (agg->slavecount) |
a666cab8 | 586 | log_buf(out, " "); |
f1d64553 | 587 | |
a666cab8 | 588 | log_buf(out, " %s: ios=%llu/%llu, merge=%llu/%llu, " |
504bc961 JA |
589 | "ticks=%llu/%llu, in_queue=%llu, util=%3.2f%%", |
590 | dus->name, | |
591 | (unsigned long long) dus->s.ios[0], | |
592 | (unsigned long long) dus->s.ios[1], | |
593 | (unsigned long long) dus->s.merges[0], | |
594 | (unsigned long long) dus->s.merges[1], | |
595 | (unsigned long long) dus->s.ticks[0], | |
596 | (unsigned long long) dus->s.ticks[1], | |
597 | (unsigned long long) dus->s.time_in_queue, | |
598 | util); | |
f2f788dd | 599 | } else { |
a666cab8 | 600 | log_buf(out, ";%s;%llu;%llu;%llu;%llu;%llu;%llu;%llu;%3.2f%%", |
504bc961 JA |
601 | dus->name, |
602 | (unsigned long long) dus->s.ios[0], | |
603 | (unsigned long long) dus->s.ios[1], | |
604 | (unsigned long long) dus->s.merges[0], | |
605 | (unsigned long long) dus->s.merges[1], | |
606 | (unsigned long long) dus->s.ticks[0], | |
607 | (unsigned long long) dus->s.ticks[1], | |
608 | (unsigned long long) dus->s.time_in_queue, | |
609 | util); | |
f2f788dd | 610 | } |
d09a64a0 JA |
611 | |
612 | /* | |
613 | * If the device has slaves, aggregate the stats for | |
614 | * those slave devices also. | |
615 | */ | |
a666cab8 | 616 | show_agg_stats(agg, terse, out); |
d09a64a0 | 617 | |
f2f788dd | 618 | if (!terse) |
a666cab8 | 619 | log_buf(out, "\n"); |
043b74b9 ST |
620 | } |
621 | ||
952b05e0 CF |
622 | void json_array_add_disk_util(struct disk_util_stat *dus, |
623 | struct disk_util_agg *agg, struct json_array *array) | |
cc372b17 | 624 | { |
cc372b17 | 625 | struct json_object *obj; |
952b05e0 | 626 | double util = 0; |
cc372b17 | 627 | |
a3b4cf7d JA |
628 | if (dus->s.msec) |
629 | util = (double) 100 * dus->s.io_ticks / (double) dus->s.msec; | |
cc372b17 SL |
630 | if (util > 100.0) |
631 | util = 100.0; | |
632 | ||
952b05e0 CF |
633 | obj = json_create_object(); |
634 | json_array_add_value_object(array, obj); | |
cc372b17 SL |
635 | |
636 | json_object_add_value_string(obj, "name", dus->name); | |
a3b4cf7d JA |
637 | json_object_add_value_int(obj, "read_ios", dus->s.ios[0]); |
638 | json_object_add_value_int(obj, "write_ios", dus->s.ios[1]); | |
639 | json_object_add_value_int(obj, "read_merges", dus->s.merges[0]); | |
640 | json_object_add_value_int(obj, "write_merges", dus->s.merges[1]); | |
641 | json_object_add_value_int(obj, "read_ticks", dus->s.ticks[0]); | |
642 | json_object_add_value_int(obj, "write_ticks", dus->s.ticks[1]); | |
643 | json_object_add_value_int(obj, "in_queue", dus->s.time_in_queue); | |
cc372b17 SL |
644 | json_object_add_value_float(obj, "util", util); |
645 | ||
646 | /* | |
647 | * If the device has slaves, aggregate the stats for | |
648 | * those slave devices also. | |
649 | */ | |
650 | if (!agg->slavecount) | |
651 | return; | |
652 | json_object_add_value_int(obj, "aggr_read_ios", | |
653 | agg->ios[0] / agg->slavecount); | |
654 | json_object_add_value_int(obj, "aggr_write_ios", | |
655 | agg->ios[1] / agg->slavecount); | |
656 | json_object_add_value_int(obj, "aggr_read_merges", | |
657 | agg->merges[0] / agg->slavecount); | |
658 | json_object_add_value_int(obj, "aggr_write_merge", | |
659 | agg->merges[1] / agg->slavecount); | |
660 | json_object_add_value_int(obj, "aggr_read_ticks", | |
661 | agg->ticks[0] / agg->slavecount); | |
662 | json_object_add_value_int(obj, "aggr_write_ticks", | |
663 | agg->ticks[1] / agg->slavecount); | |
664 | json_object_add_value_int(obj, "aggr_in_queue", | |
665 | agg->time_in_queue / agg->slavecount); | |
666 | json_object_add_value_float(obj, "aggr_util", agg->max_util.u.f); | |
667 | } | |
668 | ||
10aa136b JA |
669 | static void json_object_add_disk_utils(struct json_object *obj, |
670 | struct flist_head *head) | |
952b05e0 CF |
671 | { |
672 | struct json_array *array = json_create_array(); | |
673 | struct flist_head *entry; | |
674 | struct disk_util *du; | |
675 | ||
676 | json_object_add_value_array(obj, "disk_util", array); | |
677 | ||
678 | flist_for_each(entry, head) { | |
679 | du = flist_entry(entry, struct disk_util, list); | |
680 | ||
681 | aggregate_slaves_stats(du); | |
682 | json_array_add_disk_util(&du->dus, &du->agg, array); | |
683 | } | |
684 | } | |
685 | ||
a666cab8 JA |
686 | void show_disk_util(int terse, struct json_object *parent, |
687 | struct buf_output *out) | |
9f8f2064 | 688 | { |
d09a64a0 | 689 | struct flist_head *entry; |
9f8f2064 | 690 | struct disk_util *du; |
6efb21c2 | 691 | bool do_json; |
9f8f2064 | 692 | |
67a176fc JA |
693 | if (!disk_util_mutex) |
694 | return; | |
695 | ||
9ec7779f JA |
696 | fio_mutex_down(disk_util_mutex); |
697 | ||
698 | if (flist_empty(&disk_list)) { | |
699 | fio_mutex_up(disk_util_mutex); | |
0a839f30 | 700 | return; |
9ec7779f | 701 | } |
0a839f30 | 702 | |
6efb21c2 JA |
703 | if ((output_format & FIO_OUTPUT_JSON) && parent) |
704 | do_json = true; | |
705 | else | |
706 | do_json = false; | |
9edf7b3e | 707 | |
6efb21c2 | 708 | if (!terse && !do_json) |
a666cab8 | 709 | log_buf(out, "\nDisk stats (read/write):\n"); |
9f8f2064 | 710 | |
6efb21c2 | 711 | if (do_json) |
952b05e0 | 712 | json_object_add_disk_utils(parent, &disk_list); |
03d189b7 | 713 | else if (output_format & ~(FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS)) { |
952b05e0 CF |
714 | flist_for_each(entry, &disk_list) { |
715 | du = flist_entry(entry, struct disk_util, list); | |
9f8f2064 | 716 | |
952b05e0 | 717 | aggregate_slaves_stats(du); |
a666cab8 | 718 | print_disk_util(&du->dus, &du->agg, terse, out); |
952b05e0 | 719 | } |
129fb2d4 | 720 | } |
9ec7779f JA |
721 | |
722 | fio_mutex_up(disk_util_mutex); | |
723 | } | |
724 | ||
725 | void setup_disk_util(void) | |
726 | { | |
521da527 | 727 | disk_util_mutex = fio_mutex_init(FIO_MUTEX_UNLOCKED); |
9f8f2064 | 728 | } |